Provides database connections in factory mode to optimize database connections Example: mdb := db.GetCache("main") // count sql cbd := NewSqlBuilder(mdb.DriverName()) cbd.Select("COUNT(*)") cbd.Add("FROM tmp") cbd.Add("WHERE") cbd.AddTab("create_at BETWEEN ? AND ?", time.Now().AddDate(-1,0,0), time.Now()) // copy condition qbd := cbd.Copy() qbd.Select("id", "created_at", "name") qbd.Add("OFFSET ?", 0) qbd.Add("LIMIT ?", 20) pSql := NewPageSql(cbd, qbd) count, err := pSql.QueryCount(db) ... Or titles, result, err := pSql.QueryPageArray(db) ... Or titles, result, err := pSql.QueryPageMap(db) ...